Type-writer attachment.



A. C. CARSON.

TYPE WRITER ATTACHMENT.

APPLICATION FILED DEC. 9. 1916.

1 34,728. Patented July 31, 1917.

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TYPE WRITER ATTACHMENT.

Patented July 31, 1917.

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TYPE-WRITER ATTACHMENT.

To all whom it may concern:

Be it known that I, ASHMEAD 0. (Lesson, a citizen of the United States, residing at Columbia, in the county of Richland and State of South Carolina, have invented certain new and useful Improvements in Type- Writer Attachments; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to typewriter attachments, and has for one of its objects to provide a mechanism which will enable the operator to write the original and the carbon copy on continuous sheets, without having to stop to change sheets, or to insert carbons, all as will more fully appear here1nafter.

With this and other objects in view the invention consists in the details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views:

Figure l is a side elevational view partly in section, of a typewriter provided with an attachment made in accordance with this invention;

2 is a plan view of the attachment wn in Fig. i removed from typemg I as at i, are the members 5 of a Fment supporting frame 3, prights 8, and track member 9" extending from one upright 3 to t other. Supported by the track member 3, freely running sreover are the rollers ill carried by the racke's li which in support the attachment frame the side frames 2 and Specification of Letters Patent.

Patented July 31, 191?.

Application filed December 9, 1916. Serial No. 136,034.

with the projecting arms 13 and 14. The attachment frame 12 carries the rolls 15 and 16, pivotally mounted as at 1'7 and 18 respectively, the arms 13 carry the roll 20;

pivotally mounted as at 21, and the arms 14: carry the roll -pivotally mounted as at 26. Above the roll 25 is the roll 27 pivotally mounted as at 29 between the arms 28 rigid with the frame 12, all as will be clear from Figs. 1 and 5.

Pivot-ally hinged as at 30 to the outer end of the arms 13 is the frame 31 carrying the guide rolls 32 and 33 pivoted in the frame 31 as at 3-1 and 35 respectively.

represents a knife edge or other instrument for facilitating the tearing of the paper after it has been written upon. Carried by the pivots 17, 21 and 29 are the guide pulleys 42, 43 and 44 respectively, around which passes the belt 45. t therefore follows that should power be imparted to the roll 15 it will, through its pivot 17 turn its pulley 42, and through the belt 45 and pulleys 43 and ell-i turn the rolls 20 and 27 respectively.

Wound upon the roll 16 is the continuous paper strip on which the original copy is to be made. lVound upon the roll 15 is the continuous paper strip 51 on which the carbon copy is to be made, and passing around the roll 25 is the endless strip, ribbon or band of carbon paper 52. Said band 52 also passes between the rolls 15 ans l6 and between the original and copy sheets 50 and 51 as illustrated. From the rolls l5 and 16 the three sheets 50, 51 and 52 pass over the guide pulley 32 around the platen 3 and up over the guide roll 33 as shown. After leaving the said guide roll 33. the original sheet 50 may be torn oif in convenient lengths upon the knife edge if) or by other suitable means.

After leaving the said rolls 33 the endless carbon sheet or ribbon 52 passes above the roll 15 and around the roll 25 thus completing its circuit as will be clear from 1. After leaving the said roll 33 "the continuous strip on which the carbon copy is to be made passes to the roll 20 and may be wound up thereon, and removed therefrom conveuientintervals. In practice it is con isn't to have the original sheet 50 perforated into ftable lengths so that it may be torn in letter sheet size along the knife edge we the other hand, if this attachment is ac used for newspaper work the perforations may be dispensed with and the original strip 50 used in continuous lengths. The carbon copy on the strip 51 may of course be likewise perforated if desired so that it may be torn in convenient lengths of say letter size sheets or it may be employed in continuous lengths according to the purpose of the user.

In operation this improved attachment may be used as follows: The side members 5 are conveniently secured to the side frames 2 of the typewriter 1, whereupon the feet 7 of the frame 8 may rest upon the same table or support on which is mounted the typewriter 1 and thus support the mechanism of the attachment. The paper strips or sheets 50, 51 and 52 are conveniently assembled as indicated in Fig. 1, the continuous carbon strip 52 being properly located between the paper strip 50 for the original copy and the paper strip 51 for the carbon copy, and the three strips 50, 51 and 52 passing around the platen 3 as shown. The lower member of the frame 31 having been suitably attached to the carriage 61 of the typewriter, as by means of the screw 62 or by other fastenings, the said frame 31, together with the rolls 15, 16 etc will move with the platen 3 and the carriage 61 of the typewriter. Accordingly the keys 63 of the typewriter may be operated in the usual manner, and the platen 3 reciprocated by the usual mechanism of the typewriter, whereupon the original copy will appear upon the strip 50 and the carbon copy will appear upon the strip 51 in precisely the same manner as would be the case were ordinary letter sheets employed, in connection with the platen 3. As the platen 3 is revolved during the operation of the typewriter 1, it of necessity pulls on the sheets 50 and 51, and thus rotates the rollers 15 and 16. The rotation of the roller 15 causes a rotation of the pulley 42 and of the band 45, which in turn causes a rotation of the pulleys 43 and 14, thus also rotating the rollers 20 and 27 as will be clear from Fig. 5 of the drawings. The rotation of the roller 20 causes the carbon copy on the strip 51 to be wound upon said roller 20, whence it may be removed whenever it is desired to do so. The rotation of the roll 27 may be utilized to wind up the original copy 50 when it is not desired to sever the same along the knife edge 40. When the rolls 20 and 27 have become full, or when sufiicient copies have been made, the said rolls are removed from their mountings by any suitable means and the copies taken therefrom, whereupon new strips 50 and 51 may be led to said rolls for additional copies.

By rigidly connecting the frame 31 to the carriage 61 instead of the frame 12, I place all the weight of the attachment on the track 55 member 9 and thus not only avoid putting any additional weight on the carriage to interfere with its smooth operation, but I also, by this disposition of the part, cause the paper sheets 50 and 51 to slide smoothly over the support or guide member 80 of the machine in the accustomed manner.

It will also be apparent that the hinged connection 30 provided between the arms 13 and the member 31 will readily permit of either the vertical or horizontal movement of the typewriter carriage in shifting the same for writing upper and lower case letters. That is to say, in machines using a vertical movement of the carriage, for example, in effecting the shift from lower to upper case, owing to the hinge 30, the member 31 is permitted to rise with the carriage without disturbing the frame 12 beyond a slight lateral movement as seen in Fig. 1. It thus results that the .weight of the attachment is always maintained upon the track 9 and its supporting frame, which would not be the case were the frame 12 rigidly secured to the member 31 or to the typewriter carriage.

The arms 1& are provided with the yielding springs and the pivots 26 of the said roll 25 are mounted in sliding blocks 71 controlled by the screws 72. The said springs 7 0 yield and permit the roll 25 to move toward the operator and thus avoid undue strain on the endless carbon strip 52;

It will be clear from the foregoing that by, the mechanism disclosed, all necessity of inserting and removing paper and carbon with each letter is obviated.

It will further be clear that the time lost in such removal is likewise. saved, and therefore, the efliciency of the typewriter an operator is increased.

Owing to the stationary guide frame 8 and its track 9, the weight of the moving portions of the attachment on the carriage of the typewriter is or may be entirely neg ligible and therefore the movements of the typewriter carriage are not noticeably affected by the addition of this attachment.

The continuous band of carbon paper en ables one to use all of the carbon coating, instead'of merely the center parts of the carbon as is usually the case. This attachment carries the rolls of paper backward and forward with the carriage of the typewriter, so that the platen operates precisely as if single sheets were employed and therefore no complications due to stationary rolls are encountered. The attachment and its associated framework are preferably so constructed as to be somewhat flexible vertically, but it is rigid horizontally, thus pre-' erence to the original and copy. By moving the said tension roller 25 at one end or the other, the carbon paper can be deflected in its path to the right or to the left and thereby kept in the exact position relative to the paper strips 50 and 51 that is desired, and when the said carbon paper is once set as by means of the screws 72 it will follow its path without further attention. The carbon copy being automatically rolled up on the roller 20 it may be removed by any convenient means and filed away at ones convenience so that it does not require attention at the time each letter is written. This feature obviates the necessity of collecting and classifying various pages of copy, because they are all on a continuous sheet. The same remarks apply to the roll 27 on which the original copy may be rolled up and in connection with which it may be filed away. If only the original copy is needed, the attachment readily furnishes the same on the sheet 50 and the latter may be rolled up on the rollers 27 or it may be torn off in suitable lengths on the knife edge 40 as desired. 7

Of course any number of copies may be made by simply providing additional carbon bands 52 between each pair of sheets 50 and 51.

It is obvious that those skilled in the art may vary the details of construction, as well as the arrangement of parts, without departing from the spirit of the invention, and therefore it is not desired to be limited to the above disclosure, except as may be required by the claims.

What is claimed is:

1. In a typewriter attachment the combination of a stationary frame comprising a pair of uprights adapted to rest upon the typewriter support, each provided with a side member adapted to be attached to the side frames of the typewriter; a track member disposed above the typewriter, and ri idly connecting said uprights; a movab e frame depending from and adapted to traverse said track member; a member pivotally secured to said movable frame and adapted to be rigidly secured to the carriage of the typewriter; a pair of paper supply rolls carried by said movable frame; a pair of take up rolls also carried by said movable frame; and guide rolls carried by said pivoted member, whereby paper from said supply rolls is caused to pass around the platen of said carriage and to said take up rolls, substantially as described.

2. In a typewriter attachment the combination of a stationary frame comprising a pair of uprights adapted to rest upon the typewriter support, each provided with a side member adapted to be attached to the side frames of the typewriter; a track member disposed above the typewriter and rigidly connecting said uprights; a movable frame provided with a pair of rigid arms, depending from and adapted to traverse said track member; and a member pivotally secured to said rigid arms and adapted to be rigidly secured to the carriage of the typewriter, whereby said movable frame may be caused to reciprocate with said carriage,.substantially as described.

3. In a typewriter attachment the combination of a stationary frame comprising a pair of uprights provided with feet adapted to rest upon the typewriter support, each of said uprights being also provided with an L-shaped side member adapted to be secured to the frame of the typewriter; a horizontal track member disposed above the typewriter and rigidly connecting said uprights; a movable frame provided with a plurality of rigid arms, depending from and adapted to traverse said track member; a plurality of paper supply and take up rolls carried by said frame; a member pivotally secured to one pair of said rigid arms and adapted to be rigidly secured to the carriage of the typewriter; an endless carbon band associated with said paper rolls; and means comprising a spring controlled roll mounted Copies of this patent may be obtained for five cents each, try addressing the Commissioner of Patents, Washington, D. 0. 

